58134e1408
We were emitting this at global scope (not in Globals). That would lead to errors about the variable needing to be in the constant address space. (You can see the result in ConstArray.metal - the old code was invalid). Also, we were already making references use _globals, so the code was double-wrong (or half-right, depending on your perspective). After the core change, writeVarDeclaration was only used for local scope, and writeModifiers never used the 'globalContext' parameter. The removal of finishLine() changed every test output, unfortunately. Change-Id: Icc1356ba2cc3c339b2f5759b3d18523fd39395bc Reviewed-on: https://skia-review.googlesource.com/c/skia/+/408356 Commit-Queue: Brian Osman <brianosman@google.com> Reviewed-by: John Stiles <johnstiles@google.com>
34 lines
1.3 KiB
Metal
34 lines
1.3 KiB
Metal
#include <metal_stdlib>
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#include <simd/simd.h>
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using namespace metal;
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struct Inputs {
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};
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struct Outputs {
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float4 sk_Position [[position]];
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float2 vcoord_Stage0 [[user(locn1)]];
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float sk_PointSize [[point_size]];
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};
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vertex Outputs vertexMain(Inputs _in [[stage_in]], uint sk_VertexID [[vertex_id]], uint sk_InstanceID [[instance_id]]) {
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Outputs _out;
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(void)_out;
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int x = sk_InstanceID % 200;
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int y = sk_InstanceID / 200;
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int ileft = (sk_InstanceID * 929) % 17;
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int iright = (ileft + 1) + (sk_InstanceID * 1637) % (17 - ileft);
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int itop = (sk_InstanceID * 313) % 17;
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int ibot = (itop + 1) + (sk_InstanceID * 1901) % (17 - itop);
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float outset = 0.03125;
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outset = 0 == (x + y) % 2 ? -outset : outset;
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float l = float(ileft) / 16.0 - outset;
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float r = float(iright) / 16.0 + outset;
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float t = float(itop) / 16.0 - outset;
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float b = float(ibot) / 16.0 + outset;
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float2 vertexpos;
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vertexpos.x = float(x) + (0 == sk_VertexID % 2 ? l : r);
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vertexpos.y = float(y) + (0 == sk_VertexID / 2 ? t : b);
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_out.vcoord_Stage0.x = float(0 == sk_VertexID % 2 ? -1 : 1);
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_out.vcoord_Stage0.y = float(0 == sk_VertexID / 2 ? -1 : 1);
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_out.sk_Position = float4(vertexpos.x, vertexpos.y, 0.0, 1.0);
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return (_out.sk_Position.y = -_out.sk_Position.y, _out);
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}
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